In S230, the terminal device, after receiving the indication information from the network device, may determine the first downlink scheduling time-domain resource according to the indication information.

As an optional embodiment, the indication information may explicitly indicate the first downlink scheduling time-domain resource. For example, the indication information may include at least one of information about the starting symbol of the first downlink data time-domain resource, information about the time-domain length and information about the ending symbol. For example, the network device may indicate at least one of the starting symbol, time-domain length and ending symbol of the downlink data time-domain resource in each time-frequency resource region through the high-layer signaling. Or, the network device may also dynamically indicate at least one of a starting symbol, time-domain length or ending symbol of at least one physical resource block allocated for the terminal device through the physical-layer signaling. The embodiment of the disclosure is not limited thereto.

As another optional embodiment, the indication information may also implicitly indicate the first downlink scheduling time-domain resource. For example, the indication information may implicitly indicate the first downlink scheduling time-domain resource through information about the control channel resource in the first time-frequency resource region. For example, the indication information may include a time-domain length of the control channel resource. In such case, optionally, the network device may transmit a physical-layer common broadcast signal, the common broadcast signal carrying the indication information. However, the embodiment of the disclosure is not limited thereto.